DE602006010405D1 - ERIALS WITH WIDENED LIGHT REFLECTION STRAP - Google Patents

ERIALS WITH WIDENED LIGHT REFLECTION STRAP

Info

Publication number
DE602006010405D1
DE602006010405D1 DE602006010405T DE602006010405T DE602006010405D1 DE 602006010405 D1 DE602006010405 D1 DE 602006010405D1 DE 602006010405 T DE602006010405 T DE 602006010405T DE 602006010405 T DE602006010405 T DE 602006010405T DE 602006010405 D1 DE602006010405 D1 DE 602006010405D1
Authority
DE
Germany
Prior art keywords
liquid crystal
treatment
mixture
erials
strap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
DE602006010405T
Other languages
German (de)
Inventor
Michel Mitov
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Centre National de la Recherche Scientifique CNRS
Original Assignee
Centre National de la Recherche Scientifique CNRS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Centre National de la Recherche Scientifique CNRS filed Critical Centre National de la Recherche Scientifique CNRS
Publication of DE602006010405D1 publication Critical patent/DE602006010405D1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/38—Polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/02—Liquid crystal materials characterised by optical, electrical or physical properties of the components, in general

Abstract

The invention relates to a method of producing a liquid crystal material that can be addressed by an electric field. The inventive method is characterised in that it comprises the following steps consisting in: forming a liquid crystal mixture having a helical structure comprising a first non-photoreactive liquid crystal and a second photoreactive liquid crystal, said first liquid crystal comprising first chiral liquid crystal molecules and having a positive dielectric anisotropy and said second liquid crystal being in a concentration of less than or equal to 5% of the mixture; applying a first treatment to the liquid crystal mixture, said first treatment being performed at a constant temperature and modifying a pitch of the helix of the mixture; and applying a second treatment to the mixture, such that the second liquid crystal forms a polymer network, said second treatment being performed during all or part of the first treatment such that the liquid crystal material retains a memory of the modifications to the pitch of the helix. The invention also relates to a liquid crystal device comprising a liquid crystal material that is produced using the inventive method.
DE602006010405T 2005-09-08 2006-08-31 ERIALS WITH WIDENED LIGHT REFLECTION STRAP Active DE602006010405D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0509158A FR2890397B1 (en) 2005-09-08 2005-09-08 METHOD FOR PRODUCING LIQUID CRYSTAL MATERIAL WITH EXTENDED REFLECTION TAPE
PCT/EP2006/065895 WO2007028768A1 (en) 2005-09-08 2006-08-31 Method of producing a liquid crystal material having a broadened light reflection band

Publications (1)

Publication Number Publication Date
DE602006010405D1 true DE602006010405D1 (en) 2009-12-24

Family

ID=36337405

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602006010405T Active DE602006010405D1 (en) 2005-09-08 2006-08-31 ERIALS WITH WIDENED LIGHT REFLECTION STRAP

Country Status (8)

Country Link
US (1) US7894018B2 (en)
EP (1) EP1922386B1 (en)
JP (1) JP5193867B2 (en)
AT (1) ATE448285T1 (en)
DE (1) DE602006010405D1 (en)
ES (1) ES2336254T3 (en)
FR (1) FR2890397B1 (en)
WO (1) WO2007028768A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2890396B1 (en) * 2005-09-08 2009-01-23 Centre Nat Rech Scient PROCESS FOR PRODUCING LIQUID CRYSTAL MATERIAL WITH INCREASED REFLECTION RATE
US10642104B2 (en) * 2015-09-23 2020-05-05 Merck Patent Gmbh Method of controlling the pretilt angle in polymer stabilised liquid crystal displays

Family Cites Families (31)

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US5066107A (en) * 1988-06-16 1991-11-19 Canon Kabushiki Kaisha Liquid crystal display medium, liquid crystal display method and liquid crystal display apparatus for outputting color images
US5940150A (en) 1991-11-27 1999-08-17 Reveo, Inc. Electro-optical glazing structures having total-reflection and transparent modes of operation for use in dynamical control of electromagnetic radiation
US5691789A (en) 1995-10-30 1997-11-25 Li; Le Single-layer reflective super broadband circular polarizer and method of fabrication therefor
US6633354B2 (en) 1991-11-27 2003-10-14 Reveo, Inc. Spectrum-controllable reflective polarizers having electrically-switchable modes of operation
FR2700622B1 (en) 1993-01-18 1997-06-06 Polymage Multifunctional and adaptive color change laminated glazing and their manufacturing process.
JPH07104251A (en) * 1993-09-30 1995-04-21 Dainippon Ink & Chem Inc Liquid crystal device and its production
US6573961B2 (en) * 1994-06-27 2003-06-03 Reveo, Inc. High-brightness color liquid crystal display panel employing light recycling therein
JPH08104874A (en) 1994-10-06 1996-04-23 Fujitsu Ltd Liquid crystal material, liquid crystal display apparatus and its production
US6010643A (en) * 1994-12-03 2000-01-04 Merck Patent Gesellschaft Mit Beschrankter Haftung Cholesteric polymer network
JPH1020286A (en) * 1996-07-01 1998-01-23 Fuji Xerox Co Ltd Light controllable element, production of light controllable element and reflection type color display device
US6061108A (en) 1997-01-24 2000-05-09 Sharp Kabushiki Kaisha Broadband cholesteric polarizer and an optical device employing the same
DE19718293A1 (en) 1997-04-30 1999-03-18 Consortium Elektrochem Ind Process for the production of three-dimensionally cross-linked polymeric materials with broad cholesteric reflection bands and filters, reflectors and polarizers produced by this process
TW523621B (en) * 1997-06-11 2003-03-11 Koninkl Philips Electronics Nv Multi-domain liquid-crystal display device
DE19726051A1 (en) * 1997-06-19 1998-12-24 Consortium Elektrochem Ind Process and broadening of cholesteric reflection bands of photopolymerizable cholesteric liquid crystals and optical elements produced by this process
GB2326727A (en) 1997-06-28 1998-12-30 Sharp Kk Liquid crystal device
DE19841343A1 (en) * 1997-09-17 1999-03-18 Merck Patent Gmbh Polymer film with helically twisted molecular structure
US6099758A (en) 1997-09-17 2000-08-08 Merck Patent Gesellschaft Mit Beschrankter Haftung Broadband reflective polarizer
JPH11133412A (en) 1997-10-29 1999-05-21 Nitto Denko Corp Liquid crystal element, optical element and polarizing element
WO1999063400A1 (en) 1998-06-05 1999-12-09 Reveo, Inc. Spectrum-controllable reflective polarizers having electrically-switchable modes of operation
FR2781062B1 (en) 1998-07-09 2002-07-12 Saint Gobain Vitrage GLAZING WITH ELECTRICALLY CONTROLLED OPTICAL AND / OR ENERGY PROPERTIES
EP0982605A1 (en) * 1998-08-26 2000-03-01 MERCK PATENT GmbH Reflective film
WO2000060407A1 (en) 1999-04-06 2000-10-12 Reveo, Inc. Electro-optical glazing structures having scattering and transparent modes of operation
GB2355720B (en) * 1999-09-08 2004-09-22 Merck Patent Gmbh Process for preparing a reflective film and photodegradable chiral compounds therefor
JP2002006294A (en) * 2000-06-22 2002-01-09 Canon Inc Liquid crystal element liquid crystal device
TW588198B (en) 2001-01-12 2004-05-21 Vrex Inc A twisted nematic micropolarizer and its method of manufacturing
TW583299B (en) * 2001-04-13 2004-04-11 Fuji Photo Film Co Ltd Liquid crystal composition, color filter and liquid crystal display device
JP2002338963A (en) * 2001-05-15 2002-11-27 Fuji Photo Film Co Ltd Liquid crystal composition, selective reflection film and liquid crystal color filter
EP1295929B1 (en) * 2001-09-25 2009-01-07 MERCK PATENT GmbH Anisotropic polymer film
JP4105890B2 (en) * 2002-04-19 2008-06-25 富士フイルム株式会社 Optically active polyester / amide, photoreactive chiral agent, liquid crystal composition, liquid crystal color filter, optical film and recording medium, method for changing the helical structure of liquid crystal, and method for fixing the helical structure of liquid crystal
TW594301B (en) * 2003-04-09 2004-06-21 Chunghwa Picture Tubes Ltd Method and structure for broadening cholesteric liquid crystals spectrum
FR2890396B1 (en) * 2005-09-08 2009-01-23 Centre Nat Rech Scient PROCESS FOR PRODUCING LIQUID CRYSTAL MATERIAL WITH INCREASED REFLECTION RATE

Also Published As

Publication number Publication date
JP5193867B2 (en) 2013-05-08
ATE448285T1 (en) 2009-11-15
FR2890397B1 (en) 2009-02-27
EP1922386B1 (en) 2009-11-11
US20090128744A1 (en) 2009-05-21
WO2007028768A1 (en) 2007-03-15
FR2890397A1 (en) 2007-03-09
JP2009508154A (en) 2009-02-26
EP1922386A1 (en) 2008-05-21
ES2336254T3 (en) 2010-04-09
US7894018B2 (en) 2011-02-22

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